170 documents found, page 1 of 17
Organização do livro / Organization of the book
Gabriel, Rosalina; Borges, Paulo A. V.; Barreiros, João P.; Costa, A.C.; Porteiro, F.M.; Menezes, G.M.Este guia de campo tem como objetivo fornecer uma visão geral da biodiversidade marinha dos Açores, com ênfase nas espécies nativas que podem ser facilmente observadas tanto em ambientes costeiros como epipelágicos. No entanto, algumas espécies não nativas também são descritas quando observadas com frequência nos nossos ambientes marinhos. As espécies estão organizadas no livro pela sequência evolutiva do filo,...
Tunicados / Tunicates
Barreiros, João P.Este grupo de animais, geralmente desconhecido do grande público, contém diversas espécies e constitui um subfilo do Filo Chordata (Cordados) onde se incluem também os vertebrados. Existem quatro grupos bem diferenciados: ascídias, que vivem fixas ao substrato na sua forma adulta; salpas, pirossomos e doliolidos, que vivem na coluna de água. As primeiras, formam colónias com dezenas a centenas de indivíduos cha...
First record of the great barracuda, Sphyraena barracuda (Perciformes, Sphyraen...
Barcelos, Luis M. D.; Barreiros, João B.; Barreiros, João P.One individual of Sphyraena barracuda was collected on August 5, 2023, in the northern coast of Terceira Island, Azores, Portugal, by spearfishing. In this note, we report this first record and discuss the occurrence, which represents the northernmost one in the north-east Atlantic.
Records of Isistius sp. (Elasmobranchii: Squaliformes: Dalatiidae), from the Az...
Barcelos, Luis M. D.; Barreiros, João B.; Barreiros, João P.The marine waters around the Azores archipelago have been studied for quite a long time. Deeper areas, however, were historically poorly accessible and only now previously unreported species are recorded regularly. Our monitoring efforts of the Azorean ichthyofauna have recently revealed two cases of indirect evidence of the presence of a cookiecutter shark (Isistius sp.). The evidence, documented photographica...
Guia Prático da Flora e Fauna Marinha dos Açores / Field Guide of Azorean Marin...
Gabriel, Rosalina; Borges, Paulo A. V.; Barreiros, João P.; Costa, A.C.; Porteiro, F.M.; Menezes, G.M.Este livro foi criado principalmente para promover a incrível biodiversidade encontrada nos Açores e para facilitar a rápida identificação das espécies marinhas mais comuns nos Açores. Visa também responder ao crescente interesse pelas actividades de turismo marinho açoriano, sendo o primeiro guia de bolso que pode ser facilmente utilizado por qualquer pessoa que aprecie a natureza.
A different perspective on groupers through scientific illustration techniques ...
Barreiros, João P.In our last Newsletter, I published a short note announcing my new book “Face to Face with Groupers”. The book is finally completed and I have begun its distribution worldwide. Although I was always shy when talking about my own work illustrating groupers, I realized that, for many people, it is a novelty. I hope that you are all able to get a copy to enjoy a different perspective on groupers through scientific...
Sea turtle (Reptilia, Testudines) diversity and occurrence in the Azores Archip...
Barcelos, Luis M. D.; Vandeperre, Frederic; Parra, Hugo; Barreiros, João P.BACKGROUND: Six species of marine turtles occur in the Azores Archipelago. The loggerhead, Caretta caretta (Linnaeus, 1758), is by far the most common species and is being constantly monitored and tagged by a joint project between the University of the Azores and the University of Florida since 1989. With the implementation of the tuna fishery observers (for dolphin safe seals), an increment of sea turtle repor...
Evolutionary history, biogeography, and a new species of Sphoeroides (Tetraodon...
Araujo, Gabriel S; Kurtz, Yan R.; Sazima, Ivan; Carvalho, Pedro Hollanda; Floeter, Sergio; Vilasboa, A; Vasconcellos, A.V.; Rotundo, MatheusABSTRACT: Tetraodontidae is the most speciose family of Tetraodontiformes and is represented by fish popularly known as pufferfishes. They are characterized by modified jaws with four dental plates and the ability to inflate their bodies. Tetraodontids are distributed throughout the world and have a wide range of habitat use. One of its genera, Sphoeroides, shows a biogeographical pattern, with 19 of its 21 sp...
Is there Hope for Nassau grouper?
Barreiros, João P.In February 2020, Yvonne Sadovy de Mitcheson published a commentary in the journal PNAS (see reference below), which sheds some “light of hope” for the Nassau Grouper, Epinephelus striatus (Bloch, 1792) stemming from successful work in the Cayman Islands and recently published by Waterhouse et al. (2020) . In her commentary, Yvonne briefly describes how, once abundant and healthy populations of this grouper in ...
Trophic ecology of three sympatric batoid species (Dasyatis pastinaca, Raja cla...
Fontaine, Paco; Barreiros, João P.; JAQUEMET, SébastienABSTRACT: Describing the trophic structure and interactions of demersal elasmobranch assemblages is fundamental to understanding food web dynamics and developing ecosystem-based management approaches. Stomach content analysis (SCA) and stable isotope ratios (SIA) of carbon (δ13C) and nitrogen (δ15N) from muscle were used to examine the dietary habits and intra- and interspecific trophic ecology of three sympatr...